Simple makefile-based build for musl cross compiler

Rich Felker d8d90e3808 remove default sh2eb target and error out if TARGET is not set 9 yıl önce
patches 3fb6709806 add support for last GPLv2 binutils version (git snapshot) 9 yıl önce
sources 0b78030478 add dummy files for empty dirs to include them in git 10 yıl önce
Makefile d8d90e3808 remove default sh2eb target and error out if TARGET is not set 9 yıl önce
README.md 7d58f6a9bf add README 10 yıl önce
config.mak.dist d2f59c98d6 remove lto from gcc language list in sample config 9 yıl önce

README.md

musl-cross-make

This is a quick and simple makefile-based alternative for producing musl-based cross compilers. In addition to the build system, it provides a number of patches, including:

  • Updated versions of the musl target patches going into upstream GCC

  • Static-PIE support and enabling PIE as default

  • Fixes for SH-specific bugs and bitrot in GCC

  • Support for J2 Core CPU target in GCC & binutils

The current focus is on SH2/J2 Core targets and NOMMU (where PIE is mandatory) since these are not adequately supported by other musl cross-compiler toolchain build systems.

Usage

To build, copy the provided config.mak.dist to config.mak and edit then run make. Parallel builds are supported. The host needs to have suitable gmp/mpfr/mpc libraries installed in the standard library path, or you can add the appropriate --with options to GCC_CONFIG.

At present only GCC 5.2.0 and Binutils 2.25.1 are supported. Backporting of patches is needed to support other versions.

The included patches should also be usable with Gregor's original musl-cross or other build systems, if desired.